I am using Silverlight 4 RichTextBox to capture data that will be printed. My problem is when I print using the code below the border surrounding the RichTextBox is also printed, even when BorderThickness is set to 0.
PrintDocument theDoc = new PrintDocument();
theDoc.PrintPage += (s, args) =>
{
args.PageVisual = MyRTB;
args.HasMorePages = false;
};
Sorted with BorderBrush="{x:Null}"
Related
Using C# and Winforms, I want to display a PDF, select a rectangular region, and then extract that area of text from a number of PDFs. For displaying the PDF, I have a number of options...
Use an "Adobe PDF Reader" control to display the PDF - However, I cant use mouseover events and according to https://forums.adobe.com/thread/1640606 its just not possible to select a region.
Use a "WebBrowser" control to display the PDF, but it appears I have the same issue with mouseover events and cannot select a region.
Convert the PDF to an image (using ghostscript in my case) and displaying it in a picturebox. I'm finding the most success here, as I can now generate and record the coordinates of a rectangular region. When I take these coordinates and apply them to the PDF using Itext, I don't think my rectangular region translates correctly.
My question is, How do I render the GhostScripted image in a picture box maintaining the same ratios so that my coordinates will line up with the PDF?
Thank you in advance for the down votes!!
Here is the current state of my code... Everything works with the exception that my units are off in space somewhere. The action DOES return text, but it's never the text I selected. Im sure its a combination of the coordinate system / units and I will continue to try to understand this.
---- update
With a PDF at 0 deg rotation (portrait), I think the following holds true, or is at least working for me right now... User Units having not been changed, the coordinates taken from selecting in the picturebox need adjusting. The Y coordinates need to be subtracted from the overall height while the X coordinate remains the same.
iTextSharp.text.Rectangle rect = new iTextSharp.text.Rectangle(first.X, 3024-first.Y, last.X, 3024-last.Y);
This is picking text up exactly as expected on 0 deg rotated PDFs. On 90 deg rotated PDFs, the X and Y coordinates just need to be swapped.I am updating the code snippet below to show my working example.
using System;
using System.Drawing;
using System.Windows.Forms;
using Ghostscript.NET.Rasterizer;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;
namespace formPdf
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
string fileName; // The filename of the pdf
float width; // The width of the PDF in pixels
float hight; // the Height of the PDF in pixels
float rotation; // the Rotation of the PDF 0 or 90
float llx = 0; // The Lower Left X value for applying to the PDF
float lly = 0; // the Lower Left Y value for applying to the PDF
float urx = 0; // the Upper Right X value for applying to the PDF
float ury = 0; // the Upper Right Y value for applying to the PDF
// OnCLick event to open the file browser and select a file... The Width, Height and rotation values are set and the program
// is directed to render the First page of the pdf by calling the setPicture function
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog1 = new OpenFileDialog();
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
fileName = openFileDialog1.FileName;
PdfReader reader = new PdfReader(fileName);
iTextSharp.text.Rectangle dim = reader.GetPageSizeWithRotation(1);
width = dim.Width;
hight = dim.Height;
rotation = dim.Rotation;
setPicture(openFileDialog1.FileName);
} catch
{
// do nothing for now
}
}
}
// Using Ghostscript, the image is rendered to a picturebox. DPIs are set assuming the PDF default value is used
private void setPicture(string fileName)
{
GhostscriptRasterizer rasterizer = new GhostscriptRasterizer();
rasterizer.Open(fileName);
Image img = rasterizer.GetPage(72, 72, 1);
pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
pictureBox1.Image = img;
}
// Declare point variables for the user defined rectangle indicating the locatoin of the PDF to be searched...
Point first = new Point();
Point last = new Point();
// The first point is collected on the MouseDown event
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
first = e.Location;
}
// The second point is collected on the mouse down event. Points to be applied to the PDF are adjusted based on the rotation of the PDF.
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
{
last = e.Location;
if (rotation == 0)
{
llx = first.X;
lly = hight - first.Y;
urx = last.X;
ury = hight - last.Y;
} else if(rotation == 90) {
llx = first.Y;
lly = first.X;
urx = last.Y;
ury = last.X;
}
gettext();
}
// the original PDF is opened with Itext and the text is extracted from t he defined location...
private void gettext()
{
PdfReader reader = new PdfReader(fileName);
iTextSharp.text.Rectangle rect = new iTextSharp.text.Rectangle(llx, lly, urx, ury);
RenderFilter[] renderfilter = new RenderFilter[1];
renderfilter[0] = new RegionTextRenderFilter(rect);
ITextExtractionStrategy textExtractionStrategy = new FilteredTextRenderListener(new LocationTextExtractionStrategy(), renderfilter);
string text = PdfTextExtractor.GetTextFromPage(reader, 1, textExtractionStrategy);
iTextSharp.text.Rectangle mediabox = reader.GetPageSizeWithRotation(1);
MessageBox.Show("", text+" "+mediabox+" "+first+" "+last);
}
// Image Controls....
}
}
Does anybody know how to move content of the page (maybe set relative margins or something like that) when soft keyboard is shown.
Here is the example page from my application.
So I want when the user starts typing a phone number in the text box the bottom button will be shown above the soft keyboard. As a result I want something like that:
P.S: Sorry about Russian language on the screens.
It's kind of tricky, but as I've tried should work. I've used InputPane's showing and hiding events to change the translate transform of the button. In page's constructor I've added such code:
Windows.UI.ViewManagement.InputPane.GetForCurrentView().Showing += (s, args) =>
{
GeneralTransform gt = loginButton.TransformToVisual(this);
Point buttonPoint = gt.TransformPoint(new Point(0, loginButton.RenderSize.Height - 1));
var trans = new TranslateTransform { Y = -(buttonPoint.Y - args.OccludedRect.Top) };
loginButton.RenderTransform = trans;
args.EnsuredFocusedElementInView = true;
};
Windows.UI.ViewManagement.InputPane.GetForCurrentView().Hiding += (s, args) =>
{
var trans = new TranslateTransform { Y = 0 };
loginButton.RenderTransform = trans;
args.EnsuredFocusedElementInView = false;
};
You only have to remember that InputPane is for the whole app - once you leave the page, you will probably have to unsubscribe from those events, otherwise you will likely get exceptions.
In my C# Form I have a Label that displays a download percentage in the download event:
this.lblprg.Text = overallpercent.ToString("#0") + "%";
The Label control's BackColor property is set to be transparent and I want it to be displayed over a PictureBox. But that doesn't appear to work correctly, I see a gray background, it doesn't look transparent on top of the picture box. How can I fix this?
The Label control supports transparency well. It is just that the designer won't let you place the label correctly. The PictureBox control is not a container control so the Form becomes the parent of the label. So you see the form's background.
It is easy to fix by adding a bit of code to the form constructor. You'll need to change the label's Parent property and recalculate it's Location since it is now relative to the picture box instead of the form. Like this:
public Form1() {
InitializeComponent();
var pos = label1.Parent.PointToScreen(label1.Location);
pos = pictureBox1.PointToClient(pos);
label1.Parent = pictureBox1;
label1.Location = pos;
label1.BackColor = Color.Transparent;
}
Looks like this at runtime:
Another approach is to solve the design-time problem. That just takes an attribute. Add a reference to System.Design and add a class to your project, paste this code:
using System.ComponentModel;
using System.Windows.Forms;
using System.Windows.Forms.Design; // Add reference to System.Design
[Designer(typeof(ParentControlDesigner))]
class PictureContainer : PictureBox {}
You can just use
label1.Parent = pictureBox1;
label1.BackColor = Color.Transparent; // You can also set this in the designer, as stated by ElDoRado1239
You can draw text using TextRenderer which will draw it without background:
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
TextRenderer.DrawText(e.Graphics,
overallpercent.ToString("#0") + "%",
this.Font,
new Point(10, 10),
Color.Red);
}
When overallpercent value changes, refresh pictureBox:
pictureBox1.Refresh();
You can also use Graphics.DrawString but TextRenderer.DrawText (using GDI) is faster than DrawString (GDI+)
Also look at another answer here and DrawText reference here
For easy for your design.
You can place your label inside a panel. and set background image of panel is what every image you want. set label background is transparent
After trying most of the provided solutions without success, the following worked for me:
label1.FlatStyle = FlatStyle.Standard
label1.Parent = pictureBox1
label1.BackColor = Color.Transparent
You most likely not putting the code in the load function. the objects aren't drawn yet if you put in the form initialize section hence nothing happens.
Once the objects are drawn then the load function runs and that will make the form transparents.
private void ScreenSaverForm_Load(object sender, EventArgs e)
{
label2.FlatStyle = FlatStyle.Standard;
label2.Parent = pictureBox1;
label2.BackColor = Color.Transparent;
}
One way which works for everything, but you need to handle the position, on resize, on move etc.. is using a transparent form:
Form form = new Form();
form.FormBorderStyle = FormBorderStyle.None;
form.BackColor = Color.Black;
form.TransparencyKey = Color.Black;
form.Owner = this;
form.Controls.Add(new Label() { Text = "Hello", Left = 0, Top = 0, Font = new Font(FontFamily.GenericSerif, 20), ForeColor = Color.White });
form.Show();
Using Visual Studio with Windows Form you may apply transparency to labels or other elements by adding using System.Drawing; into Form1.Designer.cs This way you will have Transparency available from the Properties panel ( in Appearance at BackColor ). Or just edit code in Designer.cs this.label1.BackColor = System.Drawing.Color.Transparent;
I am creating a PDF using componentOne library to create a PDF in my universal application, this is creating a PDF fine for English, but when I create a PDF in Arabic it starts giving garbage characters instead of Arabic characters.
This looks like an encoding issue to me. Please let me know how do we solve such issues generally for creating PDF, even if you do not know about componentOne library. I might pick the clue.
EDIT:
Download Stripped down code:
http://1drv.ms/1ABAuqi
Code:
async void CreatePdfDocument()
{
try
{
var pdf = new C1PdfDocument(PaperKind.Letter);
pdf.Landscape = false;
// measure and show some text
var text = App.GetResource("DocumentHeading");
var font = new Font("Segoe UI Light", 36, PdfFontStyle.Bold);
var fmt = new StringFormat();
fmt.Alignment = HorizontalAlignment.Center;
// measure it
var sz = pdf.MeasureString(text, font, 72 * 3, fmt);
var rc = new Rect(0, 0, pdf.PageRectangle.Width, sz.Height);
rc = PdfUtils.Offset(rc, 0, 0);
// draw the text
pdf.DrawString(text, font, Colors.Orange, rc, fmt);
}
catch (Exception e)
{
}
}
Is there a way to place 2 instances of a bitmap in a PDF for a single image? One to display when it is viewed on the screen and another when it prints?
The problem we have is rendering a chart to a bitmap. If we do 300 dpi then axis lines, borders, etc. disappear. If we do 96 dpi, then printing it looks bad.
thanks - dave
You can use Optional Content to do this. Supplying the usage application dictionaries with a 'Print' event causes the content to be appropriate for printing. (Note, not all printing applications will honour this).
See The PDF Reference Manual, in my 1.7 edition section 4.10 'Optional Content' beginning on page 364.
You can add an Alternate Image Dictionary (PDF Spec, section 8.9.5.4) which can specify an image to be used for printing.
Yes, there is a way, although I do not know it. We used it as a prank on a coworker, when printing a document, some totally other pictures appeared
You can also use 2 readonly textbox fields and draw the images on the field's appearance. Then for one field you set its visibility to VisibleNonPrintable and for the other HiddenButPrintable.
I implemented this (using iText). For anyone else who needs these here's the code. And you can download the source at my blog.
static void Main(string[] args)
{
Document document = new Document(new Rectangle(0, 0, 8.5f * 72.0f, 11 * 72));
PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(Path.GetFullPath(#"..\..\test_dotnet.pdf"), FileMode.OpenOrCreate, FileAccess.ReadWrite));
document.Open();
document.Add(new Paragraph("Visibility test"));
// not displayed on printer
PdfLayer layer = new PdfLayer("screen", writer);
layer.OnPanel = false;
layer.SetPrint("Print", false);
layer.View = true;
PdfContentByte cb = writer.DirectContent;
cb.BeginLayer(layer);
Image img = Image.GetInstance(Path.GetFullPath(#"..\..\building_01.png"));
img.SetAbsolutePosition(72, 72 * 7);
cb.AddImage(img);
cb.EndLayer();
// not displayed on screen
layer = new PdfLayer("print", writer);
layer.OnPanel = false;
layer.SetPrint("Print", true);
layer.View = false;
cb = writer.DirectContent;
cb.BeginLayer(layer);
img = Image.GetInstance(Path.GetFullPath(#"..\..\building_02.png"));
img.SetAbsolutePosition(72, 72 * 3);
cb.AddImage(img);
cb.EndLayer();
document.Close();
Console.Out.WriteLine("all done");
}